Problem with hidding window

[mac_mark]

Hi.

I wrote dll with one form (in Delphi) and I use it in my Lazarus app. But there is a problem, when I open the window from dll (modal) and then open another windows application (or minimize mine) and then I want to get back to my Lazarus app (clicking on windows bar or by ALT+TAB) , the  modal window (from dll) is hidden under inactive main application window.

Can someone help me ?

[Arbee]

It is not a solution, but in general it is not good practice to place any user interface components in a dll.  User interaction and (busines) processing should be clearly separated. 
Is it absolutely necessary to have the form in the dll?

[mac_mark]

I agree it's not good  practice. Unfortunatelly in this case, it's necessary.

[mac_mark]

Can someone help me ?

[User137]

What kind of problem is it? Does the operating system treat dll forms as different applications, app coded wrong or maybe even a bug?

Does it go hidden if you open same kind of form without dll? Could you make a simple application to test this?

[lazguy]

At the uses clause of your interface section put the unit windows

At the onPaint event of the inactive form that is hiding the active form put the following code:

Code: [Select]

procedure TForm1.FormPaint(Sender: TObject);
var
  WindowHandler : THandle;
begin
  WindowHandler := FindWindow(nil,'HereYouPutTheCaptionOfTheWindowYouWantToBringToForeground');
  if WindowHandler > 0 then
  begin
    SetForegroundWindow(WindowHandler);
  end;
end;


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